Freaky boss?? Plz help!!?

[Rina]

Ok so I got a new job were at a restaurant. My boss, who is 30 (practically twice my age) seemed nice at first. He had just gotten a divorce with his high school sweetheart. One night I was working late. And so was my boss. He started playing this song on the radio about people having sex. Then he came over and started chatting with me. I felt comfortable talking with him. Then he dropped a plate that he was cleaning and I bent over to pick it up and he grabbed my butt. I asked him what that was for and he said he couldn't help himself and then got ontop of me and started kissing me. I felt so uncomfortable I jumped up and left. Ever since then my shifts call for later hours when him and I can be alone. And he has always been pulling stuff on me. The other day he pulled my uniform down and said he'd love to squeeze my boobs. Once I brought in my real good guy friend to act like my boyfriend and on my break I made sure my boss saw me making out with him. That night he said that when we played these games it made all the more dirtier. I need advice on what to do. Please help!!!